CN1223816C - Defrosting method for heat pump type air conditioner - Google Patents
Defrosting method for heat pump type air conditioner Download PDFInfo
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- CN1223816C CN1223816C CN 03113993 CN03113993A CN1223816C CN 1223816 C CN1223816 C CN 1223816C CN 03113993 CN03113993 CN 03113993 CN 03113993 A CN03113993 A CN 03113993A CN 1223816 C CN1223816 C CN 1223816C
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Abstract
The present invention relates to a defrosting method for heat pump air conditioners. Defrosting is carried out according to the outdoor environment temperature Tw. The method is characterized in that different methods are respectively adopted when the Tw is higher than t DEG C and lower than or equal to t DEG C: when the Tw is higher than t DEG C, a compressor stops working, an outdoor blower continues to work, an indoor blower stops working, an auxiliary electric heating mode is stopped or the compressor stops working, the outdoor blower continues to work, the indoor blower automatically converts to V1 wind shield, and simultaneously the auxiliary electric heating mode is started; when the Tw is lower than or equal to t DEG C, defrosting is carried out according to Tw higher than t DEG C, after M minutes, a four-way valve changes the direction, the compressor starts to work, the outdoor blower stops working, the indoor blower stops working, the auxiliary electric heating mode is stopped or the four-way valve changes the direction, the blower starts to work, the outdoor blower stops working, the indoor blower continues to work, simultaneously, the auxiliary electric heating mode is started, and an air door of an air outlet of the outdoor blower is in an S state (the S state can be a closed or incomplete closed mode). The present invention can reduce the working time of the compressor, reasonably use the outdoor environment temperature, adopt different defrosting methods to enhance the defrosting efficiency, increase the heating efficiency and simplify the control programs.
Description
Technical field
The present invention relates to the heat pump air conditioner Defrost method.
Background technology
In the existing heat pump air conditioner Defrost technology, the method that has is the inlet side refrigerant inlet temperature of the outlet one side place refrigerant temperature of sensing chamber's outer heat-exchanger and compressor and defrosts according to this testing result, this makes that cooling warm braw efficiency of movement is low and deposits and makes topic between control program complexity etc., air-conditioner has plenty of when need defrost, do not consider outdoor environment temperature, stop inner blower, outer blower fan, the cross valve commutation, the compressor that has is restarted after stopping about 1 minute, the uninterrupted running of the compressor that has defrosts, and has increased the compressor operating time decreased like this air-conditioner service life; The method that also has is whether the pipe temperature of the defroster perception outdoor heat converter that will change when sending warm operation judge on the off-premises station frosting, and carry out Defrost operation by calculating defrosting time in the outdoor temperature of carrying out the perception of Defrost operation time institute according to the yard piping temperature, need to increase the pipe temperature device of perception outer heat-exchanger though considered outdoor temperature like this.
Summary of the invention
In order to solve above-mentioned all topic, the purpose of this invention is to provide a kind of Defrost method of air-conditioner, adopt the present invention not increase other temperature sensing device, can reduce the compressor operating time, improve and send warm efficient and simplify control program.
The object of the present invention is achieved like this: defrost according to outdoor environment temperature TW, be characterized as: set one and judge temperature t, Tw＞t ℃ and Tw＜t ℃ of two kinds of situation are adopted the diverse ways defrosting respectively: in the time of Tw＞t ℃, adopt that method of work A is that compressor quits work, outdoor fan works on, to get one of working method A1, A2: A1 be that indoor fan quits work, closes the auxiliary electrical heating to the indoor set blower fan, A2 is that indoor fan work changes low wind speed retaining (V1 shelves) automatically over to, opens the auxiliary electrical heating; In the time of TW＜t ℃, adopt method of work B, defrost during by Tw＞t ℃ before scheduled time M minute and adopt method of work A, through after the scheduled time, cross valve commutation, compressor operating, outdoor fan quit work, to get one of working method B1, B2, B3, B4: B1, B3 be that indoor fan quits work to indoor fan, close the auxiliary electrical heating; B2, B4 are that indoor fan works on, opens simultaneously auxiliary electrical heating, the air door of indoor fan air outlet closed or contract fully not.Outdoor environment temperature Tw feature of Defrost method more than t ℃ the time is: directly forced air convection defrosts, but indoor continuously heating; The feature of Defrost method was when outdoor environment temperature Tw was less than or equal to t ℃: forced air convection improves the temperature of frost, and priming chamber inner blower and auxiliary electrical heat quickens defrosting.
Description of drawings
Fig. 1 main flow chart of the present invention
Defrosting method of work flow chart during Fig. 2 outdoor environment temperature Tw of the present invention＞t
Defrosting method of work flow chart during Fig. 3 outdoor environment temperature Tw of the present invention≤t
The specific embodiment
Further specify below in conjunction with accompanying drawing.
Consider outdoor environment temperature, establishing outdoor environment temperature is Tw, divides Tw to consider (during for example as setting t=0, then outdoor environment temperature divides Tw＞0 ℃ and Tw≤0 ℃ two kinds of situations) being less than or equal to t ℃ of two kinds of situation with Tw more than t ℃, and heat pump air conditioner enters defrosting:
(1) when outdoor environment temperature Tw=2 ℃, then adopt method of work A defrosting by Tw＞0 ℃ situation: learn by Fig. 2, at this moment compressor quit work, outdoor fan work on utilize outdoor fan that air is flowed and defrost, indoor fan can quit work under method of work A1 and close the auxiliary electrical heating; Indoor fan also can change a predetermined speed V over to automatically under method of work A2
1Work opens simultaneously that auxiliary electrical heating, outdoor fan work on, compressor quits work.Direct forced air convection defrosts when adopting method of work A2, realizes continuously heating, and indoor fan work changes a predetermined speed V automatically over to
1The wind speed shelves, open auxiliary electrical heating simultaneously, for example be low wind speed when predetermined speed, then indoor fan changes low wind speed work automatically over to, the heat that utilizes the auxiliary electrical heating to send is realized heating by the predetermined speed running by indoor fan.
(2) when outdoor environment temperature Tw=-2 ℃, then by Tw≤0 ℃ situation defrosting: learn by Fig. 3, press earlier Tw＞0 ℃ situation and adopt method of work A defrosting, utilize outdoor fan that air is flowed, the temperature of frost is risen, move scheduled time M minute.At the fixed time, compressor is in halted state, and booster action is played in the protection of compressor, prepares for the work after scheduled time M minute simultaneously.After the scheduled time, can adopt method of work B1 or method of work B2 or method of work B3 or method of work B4, method of work B1 and B3 are: compressor starts work, cross valve commutation, outdoor fan quit work, indoor fan quits work closes the auxiliary electrical heating; Method of work B2 and B4 are: indoor fan works on, and the air door of opening auxiliary electrical heating and indoor fan air outlet is simultaneously closed or contract fully, outdoor fan do not quit work, cross valve commutates, compressor starts work.Because indoor fan work can be quickened the defrosting progress, but the commutation between four-way makes the indoor refrigeration that becomes, thus by open the auxiliary electrical heating come in and refrigerating capacity, and the air door of indoor fan air outlet is closed or is not exclusively closed, do not allow wind directly blow out, allow cold and hot wind in the inner neutralization of indoor set.
The judgement of " scheduled time " mentioned during the course refers to the compressor off-air time, can stop to work after 3 minutes as compressor again.
Described temperature t, the out-of-work scheduled time of compressor, all can set by the universal circuit and the software of air-conditioner, its control procedure also can realize by foregoing circuit and software.
Claims (3)
1, a kind of heat pump air conditioner Defrost method, defrost according to outdoor environment temperature TW, it is characterized in that: set one and judge temperature t, Tw＞t ℃ and Tw≤t ℃ of two kinds of situations are adopted diverse ways respectively: in the time of Tw＞t ℃, compressor quits work, outdoor fan works on, the indoor set blower fan takes off one of row working method: (1) indoor fan quits work, closes the auxiliary electrical heating, and (2) indoor fan work changes wind speed shelves, the heating of unlatching auxiliary electrical of a predetermined speed automatically over to; In the time of Tw≤t ℃, the method defrosting when pressing Tw＞t ℃ earlier, through behind the preset time, cross valve commutation, compressor operating, outdoor fan quit work, indoor fan takes off one of row working method: (1) is indoor to quit work, and closes the auxiliary electrical heating; (2) indoor fan works on, opens simultaneously auxiliary electrical heating, the air door of indoor fan air outlet closed or contract fully not.
2, according to the described a kind of heat pump air conditioner Defrost method of claim 1, it is characterized in that: Tw defrosts in direct forced air convection more than t ℃, but indoor continuously heating.
3, according to the described a kind of heat pump air conditioner Defrost method of claim 1, it is characterized in that: Tw is lower than t ℃ or when equaling t ℃, forced air convection improves the temperature of frost, and priming chamber inner blower and auxiliary electrical heat quickens defrosting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03113993 CN1223816C (en) | 2003-03-19 | 2003-03-19 | Defrosting method for heat pump type air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03113993 CN1223816C (en) | 2003-03-19 | 2003-03-19 | Defrosting method for heat pump type air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1532482A CN1532482A (en) | 2004-09-29 |
| CN1223816C true CN1223816C (en) | 2005-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03113993 Expired - Fee Related CN1223816C (en) | 2003-03-19 | 2003-03-19 | Defrosting method for heat pump type air conditioner |
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| CN (1) | CN1223816C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679685A (en) * | 2012-05-08 | 2012-09-19 | 河南新飞电器有限公司 | Air-cooled refrigerator and energy-saving defrosting control method thereof |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100501259C (en) * | 2005-03-28 | 2009-06-17 | 广东科龙电器股份有限公司 | Refrigerating-heating air conditioner with low-temperature heat production function and control method therefor |
| JP2007040658A (en) * | 2005-08-05 | 2007-02-15 | Matsushita Electric Ind Co Ltd | Air conditioner |
| CN101726072B (en) * | 2008-10-24 | 2013-01-30 | 海尔集团公司 | Control mode of low-temperature heating of variable frequency air conditioner |
| CN101957110A (en) * | 2010-07-02 | 2011-01-26 | 海信科龙电器股份有限公司 | Method for defrosting heat pump air conditioner using parallel flow heat exchanger |
| CN102677439B (en) * | 2012-04-27 | 2016-12-14 | 青岛海尔滚筒洗衣机有限公司 | A kind of control method removing heat pump clothes dryer evaporimeter frosting and heat pump clothes dryer |
| CN103925673A (en) * | 2013-01-11 | 2014-07-16 | 邯郸美的制冷设备有限公司 | Defrosting control method of air-conditioner |
| CN105276768B (en) * | 2015-11-09 | 2018-04-03 | 广东美的制冷设备有限公司 | A kind of air-conditioner defrosting control method, control system and air-conditioning |
| CN106440559A (en) * | 2016-11-29 | 2017-02-22 | 广东美的制冷设备有限公司 | Air-conditioner defrosting system and defrosting control method |
| CN106545975A (en) * | 2016-12-08 | 2017-03-29 | 美的集团武汉制冷设备有限公司 | The heat exchanger cleaning control method of air-conditioner and device |
| CN106765926B (en) * | 2016-12-08 | 2020-08-04 | 美的集团武汉制冷设备有限公司 | Cleaning control method and device for heat exchanger of air conditioner |
| CN107514735B (en) * | 2017-07-13 | 2020-04-24 | 青岛海尔空调器有限总公司 | Defrosting control method and control device of air conditioner |
| CN108386959B (en) * | 2018-01-04 | 2019-12-03 | 青岛海尔空调器有限总公司 | Air conditioner and its defrosting control method and control device |
| CN112212466B (en) * | 2020-10-21 | 2022-03-08 | 广东积微科技有限公司 | Control method and control device for chassis heater of air conditioner outdoor unit and air conditioner |
| CN112944594B (en) * | 2021-01-29 | 2023-04-14 | 青岛海尔空调器有限总公司 | Method and device for defrosting control of air conditioner and air conditioner |
-
2003
- 2003-03-19 CN CN 03113993 patent/CN1223816C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679685A (en) * | 2012-05-08 | 2012-09-19 | 河南新飞电器有限公司 | Air-cooled refrigerator and energy-saving defrosting control method thereof |
| CN102679685B (en) * | 2012-05-08 | 2014-07-30 | 河南新飞电器有限公司 | Air-cooled refrigerator and energy-saving defrosting control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1532482A (en) | 2004-09-29 |
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